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A wide and high-efficiency area hybrid linear concentrated winding permanent magnet motor system and control method

A permanent magnet motor and concentrated winding technology, which is applied in the direction of motor control, motor generator control, AC motor control, etc., can solve the problems of reduced power density, narrow high-efficiency area, and low efficiency, so as to improve slot fullness and broaden high-efficiency area, reducing the effect of eddy current loss and circulation loss

Active Publication Date: 2022-07-29
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although the above-mentioned slot structure can improve the performance of the motor under specific working conditions, it brings problems such as narrow high-efficiency zone, not suitable for low, medium and high speed operation, reduced power density, and low efficiency. The present invention provides A wide high-efficiency zone hybrid linear concentrated winding permanent magnet motor system and its control method to overcome the existing shortcomings, this case arises from this

Method used

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  • A wide and high-efficiency area hybrid linear concentrated winding permanent magnet motor system and control method
  • A wide and high-efficiency area hybrid linear concentrated winding permanent magnet motor system and control method
  • A wide and high-efficiency area hybrid linear concentrated winding permanent magnet motor system and control method

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Embodiment 1

[0035] refer to Figures 1 to 7 , a hybrid linear concentrated winding permanent magnet motor system of the present invention includes a device body 100, the device body 100 includes a stator part 101 and a rotor part 102, the stator part 101 and the rotor part 102 are connected to each other, and there is an air gap in the middle ; Integrated module 200, the integrated module 200 integrates a flat copper wire 201, a round copper wire 202, a Litz wire 203 mixed-line multi-phase concentrated winding permanent magnet motor and a current distribution type all-in-one controller 204; and, The winding module 300, the winding module 300 current distribution type all-in-one controller 204 is composed of a combination of a current distributor 301 and multiple sets of inverter modules 302, and each inverter module 302 is connected to a set of three-phase windings 303 .

[0036] The stator component 101 includes a stator iron core 103 and a stator winding 104. The stator iron core 103 i...

Embodiment 2

[0044] refer to Figures 4 to 5 , this embodiment is different from the first embodiment in that: this embodiment discloses a control method for a wide-efficiency region hybrid linear concentrated winding permanent magnet motor, wherein the current divider is based on the input bus voltage, torque, rotational speed The speed and torque look-up table is carried out through the signal; the current state working area is determined through the speed and torque table; the multi-phase current distribution mode is selected according to the working area to realize wide and high-efficiency control. The speed and torque table is determined according to the optimal distribution mode of efficiency of multi-phase with different ratios in the whole working state of the system, and the multi-phase current distribution mode corresponding to the table lookup table is the optimal current distribution state of efficiency under the corresponding working area.

[0045] Determining the distribution...

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Abstract

The invention discloses a wide and high-efficiency area hybrid linear concentrated winding permanent magnet motor system and a control method thereof. The system comprises an integrated flat wire, round wire and Litz wire hybrid linear multi-phase concentrated winding permanent magnet motor and multi a controller. The hybrid linear multi-phase concentrated winding permanent magnet motor includes a casing and a stator core, a multi-phase stator winding, a permanent magnet, a rotor core, a rotor bracket and a rotating shaft arranged in the casing; the all-in-one controller includes a current distributor Combined with multiple sets of inverter modules, it controls the reasonable distribution of multiple three-phase winding currents under different working conditions to achieve efficient and high-reliability operation. The hybrid wire type concentrated winding permanent magnet motor system and the control method thereof of the present invention, the flat wire, the round wire and the Litz wire are mixed for different positions in the slot, and a current coordinated control strategy of the permanent magnet motor drive system is provided , to achieve the optimal distribution of the hybrid linear armature current, the high-efficiency area has a wide range, and it is suitable for a variety of rotational speed occasions.

Description

technical field [0001] The invention relates to the field of synchronous motors, in particular to a wide and high-efficiency area hybrid linear concentrated winding permanent magnet motor system and a control method. Background technique [0002] Synchronous motors have the advantages of simple structure and small size. Permanent magnet excitation can effectively improve the torque / power density and operating efficiency of the motor. The stator winding can be divided into two types: centralized and distributed according to the shape of coil winding and the way of embedded wiring. Concentrated windings are applied to salient-pole stators, which are usually wound into rectangular coils, wrapped with warp tapes to shape, and then embedded in the iron core of the salient magnetic poles after being dipped and dried. The excitation coils of general commutator motors (including DC motors and general motors) and the main pole windings of single-phase shaded-pole salient-pole motor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/04H02K1/16H02K3/28H02K3/12H02K3/50H02P21/22H02P21/00H02P21/04H02P25/024H02P27/12
CPCH02K3/04H02K1/165H02K3/28H02K3/12H02K3/50H02P21/22H02P21/0085H02P21/04H02P21/0003H02P25/024H02P27/12H02P2207/05
Inventor 刘业魏梓强丁树业许彦武张卓然
Owner NANJING NORMAL UNIVERSITY
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